Arthur brier



No. 6l9,465. Patented Feb. l4, I899. A. BRIEB.

ELECTRICAL swncu.

(Application filed Doc. 13, 1898. (No Iodel.) 2 Sheets-Sheet I.

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Patented Feb. 14, I899.

A. BRIER.

ELECTRICAL SWITCH.

(Application filed Dec. 13, 1808.)

2 Sheets-Sheet 2.

(N0 Model.)

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UNITED STATES PATENT OFFICE.

ARTHUR BRIER, OF MANCHESTER, ENGLAND;

ELECTRICAL SWITCH.

SPECIFICATION forming part of Letters Patent No. 619,465, dated February 14, 189.

Application filed December 13, 1898. Serial No. 699,149. (No model.)

To all whom it may concern.-

Be it known that I, ARTHUR BRIER, engineer, a subject of the Queen of Great Britain and Ireland, residing at Temple Street Ironworks, Manchester, in the county of Lancaster, England, have invented certain new and useful Improvements in or Connected with Electrical Switches, (for which I have made application for a patent in Great Britain, No. 11,302, dated May 18, 1808,) of which the following is a specification.

My said invention relates to improvements in electrical switches which are used in corn nection with electric motors and the like.

My improvements relate to such switches where the contact-slider of the starting-resistance is operated by means of a worm mounted upon a spindle which is capable of being moved in its bearings until the worm is brought into gear with a worm wheel or segment to which the contact-slider is con nected. By revolving the worm by means of a handle upon the spindle the contact-slider is operated so as to gradually cut out the resistance. At present the worm is brought into gear with the toothed wheel or segment by hand after turning on the switch, and various devices are adopted to maintain the contact-slider in position with regard to the starting-resistance.

The object of my invention is to positively operate the worm-spindle so as to bring the worm into and out of gear by means of the switch.

The accompanying two sheets of drawings clearly illustrate my invention.

Figure 1 is an end elevation showing my invention applied to a combined switch and resistance mechanism. Fig. 2 is a front elevation of same. Fig. 3 is a front elevation of a modified form of switch to which my invention is applicable. Fig. 4 is an end View of same.

In the drawings the resistance mechanism is marked A and the switch B.

In carrying my invention into eifect I provide an insulated connecting-rod a of any suitable material, which I loosely secure to the worm-spindle I) of the resistance mechanism. This insulated connecting-rod a is secured to or is in connection with the switch at c and operated thereby, so that when turning on the switch the insulated connectingrod a slides the spindle b, one end of which is mounted in a slot (1, so as to bring the worm e into gear with the worm-wheel f. The handle g on the spindle b is then operated in the usual manner so as to out out the resistance, and the contact-slider h is then looked in p0- sit-ion by the worm e.

When the switch B is pulled out, the insulated connecting-rod a disengages the worm e from the worm-wheel f, as shown in dotted lines in Fig. 1, and the spring 1' returns the worm-wheel and contact-slider to theirinitial starting-point.

In Fig. 1 the handle gand spring t are removed, so as not to obscure the parts.

It must be understood that the gist of my invention consists in the provision of means operating between the switch and the wormspindle, so that when the switch is actuated the worm is at the same time positively brought into and out of gear with the segment. The method of carrying this into effect may vary, therefore, in point of detail, and particularly to adapt it to the different types of starting-resistances.

On Sheet 2 of the drawings I show a modilied form of switch and starting-resistance to which my invention is also applicable. In this case the resistance mechanism A is operated horizontally by means of a worm or screw j, engaging with a half-nut 70, which is capable of sliding on guide-rods 5, so as to traverse the insulated slider m over the terminals n and thus cut out the resistance. I secure to the switch B two connecting-rods 0 of non-conducting material. The other ends of the connecting-rods 0 embrace the spindles p p of the worm j, which are mounted to revolve in inclined slots formed in the bearings q q. By operating the handle of the switch the connecting-rods 0 traverse the worm j in the slotted bearings q until the worm engages with the half-nut it. By revolving the worm j by means of the handle a" the slider m is traversed over the terminals n, so as to cut out the resistance. When the worm j is removed from engagement with the half-nut It by means of the connecting-rods 0, springs .9 return the half-nut to its initial starting-point.

I declare that what I claim is IOC) 1. In combination, an electrical switch, resistance means, a movable contact, operating means therefor and a connection from the switch to the said operating means to move it into or out of operative condition, substantially as described.

2. In combination, a switch, a resistance comprising a movable part, operating means therefor including a Worm-spindle the movable bearings therefor and operating connec- 1o tions leading from the switch to move the said bearings substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

ARTHUR BRIER. Witnesses:

JOSHUA ENTwIsLE, RICHARD IBBERSON. 

